Every 3 days marco fills up his car with gas. every 8 days he washes his car. on what day will marco fill his car with gas and wash it?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).

Which function in vertex form is equivalent to f(x) = x2 + 6x + 3? f(x) = (x + 3)2 + 3 f(x) = (x + 3)2 − 6 f(x) = (x + 6)2 + 3 f(x) = (x + 6)2 − 6

Cone a has a surface area of 384 ft2 and cone b has a surface area of 96 ft? . what is the ratio of their volume?